Decreased nerve conduction velocity Decreased sensory nerve conduction velocity HP:0003448 Decreased sensory nerve conduction velocities UMLS:C1849148 Decreased sensory NCV The sensory nerve action potential (SNAP) in response to electrical stimulation is recorded from the nerve itself by means of dermal recording electrodes. The SNAP is the sum of all the action potentials generated in sensory nerve fibers by the applied electrical impulse. Reduced speed of conduction of the action potential along a sensory nerve. HP:0006914 Abnormal sensory nerve conduction velocity